Electric soldering apparatus



E. MARTIN.

v ELECTRIC SOLDERING APPARATUS.

APPLICATION FILED APR. 8, 1920.

1,354,9 ,Patented Oct. 5,1920.

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0 pivot 0 of a double-armed lever entree EUGENE DEER-TIN, 0F CANNES. FRANCE.

ELECTRIC SOLDWJING APEAEA'IUS.

Application filed April 8,

To all whom it may concern." a Be it known that l, EUGENE MARTIN, or

Canes, Alpes lvlaritimes, France, a citizen abling joints in the form of seams to be soldered by means of a continuous operation. a

One embodiment or the invention s illustrated in the accompanying drawing, in WlllChZ- a I Figure 1 IS an elevation or the apparatus: Figs. 2 and 3 show a detail thereof, to a larger scale, at two successive stages of the operation. u

The apparatus shown comprises an electric transformer t for reducing" the voltage of a direct or alte nating current to the value required for soldering. Upon this transformer there is a bearing m for the or rocking beam 9 g the arm g of which is connected by a rod It to alever 71, the latter being pivoted at s to one of the feet or the transformer and being furnished with a treadle p. A spring T tends to hold the beam in the position shown in Fig. 1.

The arm 9 of the beam has a transverse slot 70 forming a slideway for a slide a, which carries a rack-bar j meshed with a pinion 5 working in a vertical slot above the slot. To the said pinion is fixed lever e, for rotating it by hand and thus moving the slide. To the slide ti there is pivoted a sector-shaped presser 7), depending from the beam and having its cylindrical surface at the bottom. The presser h is electrically insulated from the slide. A link attached to one side of the presser '5 is attached to the arm g at l.

Below the arm g there is a work support or bench a fixed to the transformer case but electrically insulated therefrom. One terminal of the transformer is connected to this bench by a. cable 0, and the other is connected to the slide a and presser l) by a cable 0 shown son of bench.

The

With the parts in the position in. Fig. l, the circuit is open by reathe a between the resser and the work is placed upon the bench, as

Specification of Letters Patent.

Patented Got. 5, 192%..

1920. Serial No. 922,231.

shown at m in Figs. 2 and 8. For soldering a tube, the bench may be a narrow ledge on to which the tube can be slipped, as shown in Fig. 3.

For using the apparatus the hand-lever e is first pulled down to the left, as indicated by the arrow in Figs. 1 and 2, whereby the slide (Z is moved to the right, the link f causing the presser b to swing on its pivot toward the right, so that one end of the cylindrical presser surface is moved toward the bench, and the other is lifted away from the bench. The work is placed on the bench with the lap joint or seam extending lengthwise thercof, and one end of the joint just under the lowered end of the cylindrical presser surface, the treadle 29 being then depressed, so that the spring 1' is extended and the arm 9 lowered. the presser being placed upon the work (Fig. 2). By this means the electric circuit is closed, and the heat generated first softens and then fuses together the parts to be joined.

in the course of the soldering operation the operator maintains the pressure on the treadle, whereby the pressure is held against the work, but at the same time he rocks the hand-lever a over toward the right, as indicated by an arrow in Fig. 3, causing the slide a? to move toward the left. The presser, being connected to the beam by the link f, is consequently caused to roll along the seam. lhe rate at which this rolling movement is performed is regulated by the operator according to the rate at which the current fuses the metal.

' When the presser has completed its rolling movement, the link f being then nearly parallel with the beam, the trea-dle is re leased and the spring r quickly lifts the arm 9 and presser, thus breaking the circuit. The were is then pushed farther along; the bench a, so that the right hand end of the presser surface can be lowered on to the joint at the place where the previous operation terminated.

fhe bench a and presser b are hollow and filled with water for cooling purposes. With high power, a pump may be provided for circulating the water.

The bench may be made adjustable, so that it can accommodate diiferent kinds of work.

Means other than those illustrated may be used for the linear and rotary movements of the presser, and means other than a rocking beam may be used for moving the presser to and from the Work.

In some cases the presser may be of such size that a single rolling operation will complete the seam, the arc of the pressing surface being equal in length to the seam.

What I claim as m invention and desire to secure by Letters atent of the United States is 1. In electric soldering apparatus the combination of a bench, a slide, a carrier for said slide, a presser pivoted to said slide, having a curved working surface, means linking said pivoted presser to said carrier, means for moving said carrier to and from said bench, and means for supplying electric current to said presser.

2. In electric soldering apparatus, the combination of a bench, a slide, acarrier for said slide, means for reciprocating said slide on saidcarrier, a presser pivoted to said slide, having a curved working surface, means linking said pivoted presser to said carrier, means for moving said carrier to and from said bench, and means for supplying electric current to said presser.

3. In electric soldering apparatus the combination of a'bench, a rocking beam, a slide reciprocable on one arm of said beam, a sector-shaped presser pivoted to said slide having a cylindrical working surface, a link connecting said presser to said beam, means for rocking said beam, whereby said presser is movable to and from said bench and means for supplying electric current to said presser.

4. In electric soldering apparatus the combination of a bench, a rocking beam, a slide reciprocable on one arm of said beam, a sector-shaped presser pivoted to said slide having a cylindrical working surface, a link connecting said presser to said beam, means, including a treadle, for rocking said beam, whereby said presser is movable to and from said bench and means for supplying electric current to said presser.

5. In electric soldering apparatus the combination of a bench, a rocking beam, a slide reciprocable on one arm of said beam, a sector-shaped presser pivoted to said slide having a cylindrical Working surface, a link connecting said presser to said beam, means for rocking said beam, whereby said presser is movable to and from said bench, a rack fixed to said slide, a pinion meshed with said rack and mounted on said beam, means for rotating said pinion and means for supplying electric current to said presser.

In Witness whereof I have signed this specification in the presence of two witnesses.

EUGENE MARTIN. Witnesses:

VINCENT GURDJI, PETER PETERSEN. 

